Added test that SurfaceFlinger metrics are calculated on android

tools/telemetry/telemetry/core/backends/chrome/tracing_backend_unittest.py

Index: tools/telemetry/telemetry/core/backends/chrome/tracing_backend_unittest.py
diff --git a/tools/telemetry/telemetry/core/backends/chrome/tracing_backend_unittest.py b/tools/telemetry/telemetry/core/backends/chrome/tracing_backend_unittest.py
index a3788174cc04ffd5323031d5547f462ec6b5f5f7..48d8650fe8fc3616c104fdaf47826866a42e5ff0 100644
--- a/tools/telemetry/telemetry/core/backends/chrome/tracing_backend_unittest.py
+++ b/tools/telemetry/telemetry/core/backends/chrome/tracing_backend_unittest.py
@@ -10,8 +10,8 @@ from telemetry import decorators
 from telemetry.core import util
 from telemetry.core.platform import tracing_category_filter
 from telemetry.core.platform import tracing_options
-from telemetry.timeline import model
-from telemetry.timeline import tracing_timeline_data
+from telemetry.timeline import model as model_module
+from telemetry.timeline import trace_data as trace_data_module
 from telemetry.unittest_util import tab_test_case
 
 
@@ -33,9 +33,11 @@ class TracingBackendTest(tab_test_case.TabTestCase):
     options.enable_chrome_trace = True
     self._tracing_controller.Start(
       options, tracing_category_filter.TracingCategoryFilter())
+
     trace_data = self._tracing_controller.Stop()
     # Test that trace data is parsable
-    model.TimelineModel(trace_data)
+    model = model_module.TimelineModel(trace_data)
+    assert len(model.processes) > 0
 
   @decorators.Disabled('chromeos') # crbug.com/412713.
   def testStartAndStopTraceMultipleTimes(self):
@@ -47,59 +49,7 @@ class TracingBackendTest(tab_test_case.TabTestCase):
       options, tracing_category_filter.TracingCategoryFilter()))
     trace_data = self._tracing_controller.Stop()
     # Test that trace data is parsable
-    model.TimelineModel(trace_data)
+    model_module.TimelineModel(trace_data)
     self.assertFalse(self._tracing_controller.is_tracing_running)
     # Calling stop again will raise exception
     self.assertRaises(Exception, self._tracing_controller.Stop)
-
-
-class ChromeTraceResultTest(unittest.TestCase):
-  def __init__(self, method_name):
-    super(ChromeTraceResultTest, self).__init__(method_name)
-
-  def testWrite1(self):
-    ri = tracing_timeline_data.TracingTimelineData(map(json.loads, []))
-    f = cStringIO.StringIO()
-    ri.Serialize(f)
-    v = f.getvalue()
-
-    j = json.loads(v)
-    assert 'traceEvents' in j
-    self.assertEquals(j['traceEvents'], [])
-
-  def testWrite2(self):
-    ri = tracing_timeline_data.TracingTimelineData(map(json.loads, [
-        '"foo"',
-        '"bar"']))
-    f = cStringIO.StringIO()
-    ri.Serialize(f)
-    v = f.getvalue()
-
-    j = json.loads(v)
-    assert 'traceEvents' in j
-    self.assertEquals(j['traceEvents'], ['foo', 'bar'])
-
-  def testWrite3(self):
-    ri = tracing_timeline_data.TracingTimelineData(map(json.loads, [
-        '"foo"',
-        '"bar"',
-        '"baz"']))
-    f = cStringIO.StringIO()
-    ri.Serialize(f)
-    v = f.getvalue()
-
-    j = json.loads(v)
-    assert 'traceEvents' in j
-    self.assertEquals(j['traceEvents'],
-                      ['foo', 'bar', 'baz'])
-
-  def testBrowserProcess(self):
-    ri = tracing_timeline_data.TracingTimelineData(map(json.loads, [
-        '{"name": "process_name",'
-        '"args": {"name": "Browser"},'
-        '"pid": 5, "ph": "M"}',
-        '{"name": "thread_name",'
-        '"args": {"name": "CrBrowserMain"},'
-        '"pid": 5, "tid": 32578, "ph": "M"}']))
-    timeline_model = model.TimelineModel(ri)
-    self.assertEquals(timeline_model.browser_process.pid, 5)